Gnome-control-center exit code 1

This is all the information I can gather:

√ ; gnome-control-center --verbose
✗ 1 ; echo $?

I am running awesome as a window manager, which does not have Wayland support. I guess that could be part of the problem. Running gnome-control-center in Gnome works fine.

Any idea?

Try using journalctl to find relevant error messages – see Awsome WM issue 3259.

Thank you, the link provided the answer: env XDG_CURRENT_DESKTOP=GNOME gnome-control-center.